Delay fuse



Feb.l 24, '1948. i J. c. GILLETTE ETAL. 2,436,385 DELAY FUSE Filed Feb. 15, 1945 'H :f-l- I a Jahn 115mm@ Braxtnn H Tabh, 1.11".

32# wmfxw v I. attunulz,

-point.. netonatmg .assembly lili-SM1, a Aof suoliassembly ilinstratedtotshowgthe Aampli-- 4mation dfthepxzesentinvexitibni ,Linse n;unarmed position.

n'tu Figure '2; `with.^the*'fnsefinfunarmed?position.

'iine 4 4 "ofFigureiZ and;

intermptexf fand -desisnaiedfhexfery'ltheffnn- 1 Painted te. 24 194e 2,436,385

-' e., .s @ofenden :dna-the `fuse rbody-ibutfitfmyfbe manually looked racross theifiash passage the :outside-loi zthe rial-:ell `:"oap vbo fperimit ythefash'xfrom the 'fdetonat'or .iassemblyiin-fthe nose ffrom reaching @the Ilavoosteimns .aim-.eminufrlstesmltszn :ie-

@not shown) fwhichfis lr-located :in nthe mor-ward end .biayusesiiforlesmlosilmlla -ttsgmrgimamaohect .of the explosive charge in the shell. When fthe eissto'mwidewlremciimntrmmshefstefunderll fntenruptersis ksetft'o operate iby :centrifugal force i s, `a. .1; shipment me detonat'o'r assembly istherst temperate upon finstanemmswl-aeemt flilropmng'of Y ibhe lshellworfits:fsuhieeiunimiwrsfmrfubmtiomn im y :celay'ftise'sin the 'fuse bodyfwill Acause *the explw .lisibnfof ther'shel-l. v fstandardmsummewhichmfseokftof "YIheipartsheretofore described formno partf'of @the presentihvenbion andas state'dfat Ithe outset, A are 'orilyvillustrated to show lthe-fr'elaton o'f KJour ftflre;jammerwhenxnmmsition.Slxitrgtluese .igimprovements "to ithem. Laeyices laregfso'smwmeiimtfiper- The @following *relates to from' improvement. `fated, :by orcesrmther :than @Emmi ifofrl'fejas therelis vafmrlindricalfcavityi in the fuse 'bodyiin by the dropping of the shell or in some obhermnwhich ts a cylindrical stationaif'ylfius'e icasing 9 intended emergency,.whereas in thesinstniiinfheld-"initheicavitvbyian'externallyithredediing iFigureiis 'asectionaiplanewewtkenialaout on ..Figure 5.15 afperspeetive view slidememberfofthlsinventium t 4j `lRielerringf--toitlieilniwingsfandma'sinnlos' *hefshipassazef here eeneelknewuwas; .isterset informiamo-wana 11018:.23 leenafalnf 'located intheisk lLthe-:lioleV-n vthe diskian'd :'izliegiiash; passages 21 and -22 completing the' ave- -nnefshroughtiieuplunger':body :to the booster legal -forcef ttmnenithe elayiuseiis in unarmedpositi'on. :The

@impact theishellbutvshould itfaltto'do so, the

iiian;registers"withA 'the Hash-passage 212 inthe j rplunger body, saidfpa'ssage-'Z leading tojtheffV -orwardf'jprtion `of:thefuse?-odtmxiiintersecting. :fw fbooster in :theshen oifarge. Thepassage '2 l reg-- into the sockets in the slide.

slide 20 has a laterally extending lip 24 having a hole 25 therein removed somewhat from its outer edge leaving a solid portion or barrier 26, which when the fuse if unarmed, covers up and protects the primer I3 from the firing pin' I4.

The'slide is bored from opposite sides to form sockets 21 for the reception of .the reduced ends 28 of centrifugal force responsive bolts 28 slidable in the bores 30 in the plunger body H. The outer f.

`enter the passage 2| in the slide and thus no ends 3l of the bolts abut disks 32 threaded -in the bores 3U, there being springs 33 between the upon ,impact offlthe shell disks and bolts urging the inner vendsy of the bolt as a result of the cOOPQlation with the slide of the@ centrifugal force responsive bolts 29 and the set- I back bolts 36, the slide is positively locked against movement when the fuse is in unarmed position and cannot be moved by any force other than centrifugal force to which the bolts respond when the deceleration sets in, beyond the muzzle of the gun.

Carried by the casing 9'is a stop pin 40 opposite the inner end of which is a hole '4I in the disk I1 to permit the passage of the end of the pin when the slide reaches armed position, the relative localities of the hole 23 in the disk, and the flash passage 2I in the slideybeingsuch that when the slide reaches armed position the stop pin will be aligned with the passage 2I through hole 4I and permit the plunger body to move toward .the ring pin,A the stop providing an .additional safety A.device for thefuse when in unarmed position.

The oor 42 for the slide recess I9 is slightly upwardly and outwardly inclined and the bottom* of the slide is correspondingly ,shapedV so that the slide, during the period of acceleration lwill remain in unarmed position due to the forces of setback and friction'between the'slide and thev bottom of the recess.

During the movement of the slide. from unarmed position, shown in Figure 2, to armed position, the slide due to the shape of its bottom and that of the floor of the recess, will rise slightly and to providefor this movement'there is left ia 50 clearance between the disk Il and the top of the slide. j

` The disk I'I has a hole43 in linewith the firing .pin I4, through which the pin passes to contact the primer upon impact of the shell, the barrierj 26 at this time beingremoved.

The stop 4I) terminates just short of the top-.of

ithe slide 20 and 4willengage the slide and limit the forward movement of the delay body,.shou-ld y there be a slight'movement -of said body towardco primer avallable to thefn the end of the casingagainstfspring I8. This Intheunarmed position yshown in Figures "2 and 3, theflring pin cannot-reach the primer :since the slide 20 ofwhichthebarrier.2t` forms a part, is` locked-by the centrifugal forceresponsive `bolts 29, and said'bolts -are ign 'turn 'locked by setback bolts. 36.. Upon firing the projectile the setba^k boltsv are withdrawn 'fron-r the.' recesses Yin the bolts29 permitting said bolts to respond tofcentrifugal;force-.unlocking theslide, which,16, recevedfin:saidrecessinthe-slide,whenthefuse The bolts are ref-s..

by centrifugal force is moved to the outer end of the recesses I9 to armed position, withdrawing the barrier 2B permitting the firing pin to reach the primer when the delay body I I moves for- 5 wardly upon impact of the shell.

longer hinder the movement of the delay body As-'heretofore stated, interrupter 4 is not part of the presentinvention and is shown only to show the relation-ofthe instant fuse to said interrupter. As shown, the interrupter is locked a^ross the flash passage 3 by engagement between the 1 upper'fen'dI-of theg interrupter and eccentric 'shouldero'ii'tlrfe' lower. end of its casing and in position to prevent functioning of the superdling of the shell-in 'which' the fuse is contained,

because the firing pin cannot-reach the primer f until theba-rrier 26 is removed from its path,"the slide of which therbarrier isanpart', cannot move unless -the 4centrifuga-lforce"operated bolts 29 35 are' withdrawn, and-these bolts cannot move un- 40 1. In 'a'delay-fiise fori a shell, a fuse body,a

stationary.` lelayff.fusey casing in -said bodyfia plunger v"sli'dalilb said casing; an "eccentrically located b`ore"`i`' said'plun'g'e'r establishing com' mun'icationl b'et ee yhe plunger and the ve'zafslel'l, fafprirnerin said boreha 'firing pin-carried 'by the casing in line withvthe primer and adaptedl lo-contact said primer *upon thev forward movementA of *the plunger upon impact, atransvers'e' c sinith'e plungeL-a slide in saidrec'ess IQSPOI) eftogcentrifug'algfore, said slide being' provided. with" aflaterally extending lip "normally coverii the primer to prevent. accidental .engagementbetweenlthe "primer andfrin'g 5 pin' centrifugalfqrce `rresponsive bolts yin .the plunger engagement, withf'tle slide to norlmally lock it against 1'1"t, y setback means "engagingltlezboltsland.op rabl'e 'to release the `.slide upon L ',Jfiririgjo e.'shell .t'o.l renderythe n glpin upon impact. of

'a'usebod-, stationary`v fusegasing, in 'saidbodylg a delay plunger slidable in saidbasingring means actuated upon j plunger .and -.their :as'iri ggur'g'inug the plunger to the rearbf-.ibe @eine a. slide transversely-:movafble in said-.fplungergand respons-ive to centrifugal force, said .-slide having a recess -therein and -a mevr-tion normaux.blocsinsfihe firing means a projectioncarried by ,the casing and. adapted to prevent operativemovement of the delay plunger when the fuse is in unarmed position, said-pro- T jection being positioned ,to register -with and be 6 is in armed position to allow the plunger to reach armed position prior to impact of the shell. Y UNITED STATES PATENTS JOHN C, GIILETTE Number Name Date BRAXTON H TABB, JR 1,569,248 Adelman Jan. 12, 1926 I 5 1,692,455 Lukens Nov. 20, 1928 REFERENCES CITED 1,749,088 Rogers Mar. 4, 1930 2,006,575 Methlin July 2, 1935 The following references are of record in the 2,043,266 Rogers June 9 1936 le of this patent: 

